| Message ID | 0e0c4c067236e11f661c1d067017e1ca975c9ddb.1721297721.git.michal.simek@amd.com |
|---|---|
| State | Accepted |
| Commit | 1e49d7f50e4a816b27d7728792e01fd845980c9a |
| Delegated to: | Michal Simek |
| Headers | show |
| Series | arm64: zynqmp: dts: Add rts delay property for rs485 mode on KD240 | expand |
On 7/18/24 12:15, Michal Simek wrote: > From: Manikanta Guntupalli <manikanta.guntupalli@amd.com> > > Add "rs485-rts-delay" property to uartps node with delay_rts_before_send > and delay_rts_after_send values as 10ms for rs485 mode on KD240. > > 10ms rts delay values have been chosen based on testing with rs485 > temperature sensor (which is part of the kit) as safe minimum value > for reliable operation at a baud rate of 9600. > > Signed-off-by: Manikanta Guntupalli <manikanta.guntupalli@amd.com> > Signed-off-by: Michal Simek <michal.simek@amd.com> > --- > > arch/arm/dts/zynqmp-sck-kd-g-revA.dtso | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm/dts/zynqmp-sck-kd-g-revA.dtso b/arch/arm/dts/zynqmp-sck-kd-g-revA.dtso > index 1727a1cc15c1..4de29d5d3ff6 100644 > --- a/arch/arm/dts/zynqmp-sck-kd-g-revA.dtso > +++ b/arch/arm/dts/zynqmp-sck-kd-g-revA.dtso > @@ -358,6 +358,7 @@ > status = "okay"; > rts-gpios = <&gpio 72 GPIO_ACTIVE_HIGH>; > linux,rs485-enabled-at-boot-time; > + rs485-rts-delay = <10 10>; > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_uart0_default>; > assigned-clock-rates = <100000000>; applied. M
diff --git a/arch/arm/dts/zynqmp-sck-kd-g-revA.dtso b/arch/arm/dts/zynqmp-sck-kd-g-revA.dtso index 1727a1cc15c1..4de29d5d3ff6 100644 --- a/arch/arm/dts/zynqmp-sck-kd-g-revA.dtso +++ b/arch/arm/dts/zynqmp-sck-kd-g-revA.dtso @@ -358,6 +358,7 @@ status = "okay"; rts-gpios = <&gpio 72 GPIO_ACTIVE_HIGH>; linux,rs485-enabled-at-boot-time; + rs485-rts-delay = <10 10>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_uart0_default>; assigned-clock-rates = <100000000>;